Spivey's departure comes as the comedy is retooling from a single-camera show to a multi-camera, live-audience show. It's expected to return in the spring.

Let's tally up the big changes, both in front of and behind the camera, that have happened to "Up All Night" in the six months.

- As production on Season 2 starts, Spivey and executive producer
Tucker Cawley say they're
dropping the workplace element of the show. Ava's (
Maya Rudolph) talk show is canceled, putting her and producer Reagan (
Christina Applegate) out of work. Reagan is now a full-time mom, while Chris (
Will Arnett) once again becomes the breadwinner.
Luka Jones joins the cast as Reagan's brother.